{"product_id":"cosrx-vitamin-c-23-serum","title":"COSRX Vitamin C 23 Serum","description":"\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003eHigh-strength Vitamin C care for brighter, smoother and more even-looking skin\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCOSRX The Vitamin C 23 Serum\u003c\/strong\u003e is a concentrated Korean facial serum formulated with \u003cstrong\u003e23% pure Vitamin C (Ascorbic Acid)\u003c\/strong\u003e to target dullness, uneven-looking skin tone and visible signs of ageing.\u003c\/p\u003e\n\u003cp\u003eDesigned for customers looking for a more intensive Vitamin C treatment, the formula combines pure Vitamin C with \u003cstrong\u003eVitamin E and Hyaluronic Acid\u003c\/strong\u003e to provide antioxidant care while supporting hydration and a smoother, more radiant-looking complexion.\u003c\/p\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cp\u003e• Formulated with 23% pure Vitamin C.\u003c\/p\u003e\n\u003cp\u003e• Helps brighten dull-looking skin.\u003c\/p\u003e\n\u003cp\u003e• Helps improve the appearance of dark spots and uneven skin tone.\u003c\/p\u003e\n\u003cp\u003e• Helps reduce the appearance of post-blemish marks.\u003c\/p\u003e\n\u003cp\u003e• Provides antioxidant skincare benefits.\u003c\/p\u003e\n\u003cp\u003e• Helps improve the appearance of fine lines.\u003c\/p\u003e\n\u003cp\u003e• Supports smoother-looking skin texture.\u003c\/p\u003e\n\u003cp\u003e• Helps maintain skin hydration.\u003c\/p\u003e\n\u003cp\u003e• Promotes a clearer, more radiant-looking complexion.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eKey Ingredients\u003c\/h3\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003e23% Pure Vitamin C\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eA high concentration of \u003cstrong\u003eAscorbic Acid\u003c\/strong\u003e, the pure form of Vitamin C, provides powerful antioxidant care while helping improve the appearance of dark spots, dullness and uneven-looking skin tone.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eVitamin E\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eAn antioxidant that complements Vitamin C while helping protect the skin against environmental oxidative stress and supporting overall skin condition.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHyaluronic Acid\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eHelps attract and retain moisture within the skin, supporting hydration and helping maintain a smoother, plumper appearance.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eAllantoin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eHelps soothe and condition the skin, supporting comfort alongside the serum's high concentration of Vitamin C.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cp\u003e• Dull-looking skin\u003c\/p\u003e\n\u003cp\u003e• Uneven-looking skin tone\u003c\/p\u003e\n\u003cp\u003e• Dark spot concerns\u003c\/p\u003e\n\u003cp\u003e• Post-blemish marks\u003c\/p\u003e\n\u003cp\u003e• Uneven skin texture\u003c\/p\u003e\n\u003cp\u003e• Fine lines\u003c\/p\u003e\n\u003cp\u003e• Skin lacking radiance\u003c\/p\u003e\n\u003cp\u003e• Normal skin\u003c\/p\u003e\n\u003cp\u003e• Combination skin\u003c\/p\u003e\n\u003cp\u003e• Oily skin\u003c\/p\u003e\n\u003cp\u003e• Experienced Vitamin C users\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cp\u003eAfter cleansing, shake the bottle gently from side to side before use.\u003c\/p\u003e\n\u003cp\u003eApply a few drops evenly over the face, avoiding the immediate eye and mouth areas.\u003c\/p\u003e\n\u003cp\u003eGently pat into the skin until absorbed, then follow with your preferred moisturiser.\u003c\/p\u003e\n\u003cp\u003eIf you are new to high-strength Vitamin C, introduce the serum gradually and increase frequency according to your skin's tolerance.\u003c\/p\u003e\n\u003cp\u003eWhen used during the daytime, always finish your routine with broad-spectrum sunscreen.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhy Choose COSRX?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCOSRX is a South Korean skincare brand\u003c\/strong\u003e recognised for ingredient-focused formulations designed to address specific skin concerns through straightforward skincare routines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Vitamin C 23 Serum\u003c\/strong\u003e is designed for those looking for a more concentrated approach to Vitamin C skincare. With \u003cstrong\u003e23% pure Ascorbic Acid\u003c\/strong\u003e, it provides targeted antioxidant and radiance-focused care for concerns such as dullness, dark spots, post-blemish marks and uneven-looking tone.\u003c\/p\u003e\n\u003cp\u003eThe addition of \u003cstrong\u003eVitamin E and Hyaluronic Acid\u003c\/strong\u003e complements the high-strength Vitamin C formula with antioxidant and moisture-supporting benefits, creating a concentrated treatment for brighter, smoother and healthier-looking skin.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat does COSRX The Vitamin C 23 Serum do?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eIt helps improve the appearance of dullness, dark spots, uneven skin tone and post-blemish marks while providing antioxidant care and supporting smoother, more radiant-looking skin.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it really contain 23% Vitamin C?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The formula contains \u003cstrong\u003e23% pure Vitamin C in the form of Ascorbic Acid\u003c\/strong\u003e, making it a high-strength Vitamin C treatment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIs it suitable for beginners?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eBecause it contains a high concentration of pure Vitamin C, beginners should introduce it gradually rather than immediately using it every day.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCan I use it every day?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eYes, depending on your skin's tolerance. If you are new to concentrated Vitamin C, begin with less frequent application and gradually increase use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIs it suitable for sensitive skin?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eThe high concentration of pure Vitamin C may be too intensive for some sensitive skin types. Patch testing and gradual introduction are recommended, particularly if your skin is reactive.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eDoes it help with post-blemish marks?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. Vitamin C can help improve the appearance of uneven pigmentation and post-blemish marks, contributing to a clearer and more even-looking complexion.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCan I use it in the morning?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. If used in your morning routine, always follow with a broad-spectrum sunscreen.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eHow should I store the serum?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003ePure Vitamin C is sensitive to factors such as heat, light and air. Keep the bottle tightly closed and follow the storage instructions provided on the product packaging. COSRX recommends refrigeration after opening to help maintain freshness.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eIs a slight tingling sensation normal?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003eBecause this is a concentrated 23% pure Vitamin C formula, some users may experience a mild temporary sensation during application. Discontinue use if significant or persistent irritation occurs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhy Shop With Us?\u003c\/h3\u003e\n\u003cp\u003e• 100% authentic products sourced from trusted suppliers.\u003c\/p\u003e\n\u003cp\u003e• Fast and reliable tracked delivery across Europe.\u003c\/p\u003e\n\u003cp\u003e• Secure checkout with encrypted payments.\u003c\/p\u003e\n\u003cp\u003e• Carefully packaged to ensure every order arrives safely.\u003c\/p\u003e\n\u003cp\u003e• Dedicated customer support whenever you need assistance.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":51913794191655,"sku":null,"price":24.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/7660\/2151\/files\/converted_image-12_8d6278aa-9413-4cef-8488-86c2a3b95e66.webp?v=1787503994","url":"https:\/\/www.cutelleshop.com\/products\/cosrx-vitamin-c-23-serum","provider":"CUTELLE","version":"1.0","type":"link"}